安卓学习-界面-ui-Notification

通知

setDefaults(): 这只通知LED等、音乐、震动等

setAutoCancle():点击通知后，是否自动消失

setContentTitle():通知内容标题

setContentText():通知内容

setSmailIcom():通知小图标

SetLargeIcon():通知大图标

setTick():通知状态栏提示信息

setContentIntent():双击后运行的Intent

直接上例子，第一个简单点，就一个提示信息，点击后调用一个页面

第二个显示一个下载的提示信息，带进度

例子1

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="发送通知" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="关闭通知" />

</LinearLayout>

MainActivity.java

public class MainActivity extends Activity {

    NotificationManager nm;
    Button btn1;
    Button btn2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        //获取系统的NotificationManager服务
        nm=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        
        btn1=(Button)findViewById(R.id.button1);
        btn2=(Button)findViewById(R.id.button2);
        
        btn1.setOnClickListener(new OnClickListener() {
                public void onClick(View v) {
                
                Intent intent=new Intent(MainActivity.this,LoginActivity.class);
                //对intent进行包装
                PendingIntent pi=PendingIntent.getActivity(MainActivity.this, 0, intent, 0);
                //创建通知
                Notification nf=new Notification.Builder(MainActivity.this)
                            //是否自动关闭
                            .setAutoCancel(true)
                            //通知的提示信息
                            .setTicker("有新消息")
                            //小图标
                            .setSmallIcon(R.drawable.ic_launcher)
                            //通知标题
                            .setContentTitle("一条新的通知")
                            //通知内容
                            .setContentText("有新的通知，点击查看")
                            //设置系统默认声音，默认LED灯
                            //.setDefaults(Notification.DEFAULT_SOUND|Notification.DEFAULT_LIGHTS)
                            //设置自定义声音
                            //.setSound(sound)
                            //什么时候启动
                            .setWhen(System.currentTimeMillis())
                            //设置该通知要启动的intent
                            .setContentIntent(pi).build();
                //发送
                nm.notify(1234, nf);                            
            }
        });
        
        btn2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                //取消
                nm.cancel(1234);
            }
        });

    }
}

例子2

一个下载升级包的例子，点击开始下载，通知栏会增加一条现实进度的消息，下载完成了，点击可安装apk

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:android1="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android1:id="@+id/button1"
        android1:layout_width="wrap_content"
        android1:layout_height="wrap_content"
        android1:text="开始下载" />

</LinearLayout>

自定义xml

view1.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/imageView1"
        android:text="XXX.apk"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_toLeftOf="@+id/textView3" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/progressBar1"
        android:text="100K/1024K"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/progressBar1"
        android:text="90%"
        android:textAppearance="?android:attr/textAppearanceSmall" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/progressBar1"
        android:layout_below="@+id/textView3"
        android:textAppearance="?android:attr/textAppearanceSmall" />

</RelativeLayout>

MainActivity.java

public class MainActivity extends Activity{

    NotificationManager nm;
    RemoteViews rv;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        nm=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        
        Button btn=(Button)findViewById(R.id.button1);
        btn.setOnClickListener(new OnClickListener() {
    
            public void onClick(View v) {
                Intent intent=new Intent(MainActivity.this,DownService.class);
                intent.putExtra("appName", "shenghuoriliwannianli_39");
                intent.putExtra("appURL", "http://gdown.baidu.com/data/wisegame/2dcb384356f57ea2/shenghuoriliwannianli_39.apk");
                startService(intent);
            }
        });

    }

}

DownService.java

public class DownService extends Service{

    private String appName;
    private String appURL;
    private NotificationManager ni;
    private Notification nf;
    private RemoteViews rv;
    private File updateFile;
    
    @Override
    public IBinder onBind(Intent intent) {
        // TODO 自动生成的方法存根
        return null;
    }
    
    
    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        appName=intent.getExtras().getString("appName");
        appURL=intent.getExtras().getString("appURL");

        //升级目录
        File updateDir = new File(Environment.getExternalStorageDirectory()+ "/test/");  
        //升级文件
        updateFile = new File(updateDir + "/" + appName + ".apk");  
        //判断文件夹是否存在，不存在则创建
        if(!updateDir.exists()){
            updateDir.mkdir();
        }
        //判断升级文件是否存在，不存在则创建
        if(!updateFile.exists()){
            try {
                updateFile.createNewFile();
            } catch (IOException e) {
                // TODO 自动生成的 catch 块
                e.printStackTrace();
            }
        }
        
        //创建NotificationManager
        ni=(NotificationManager)getSystemService(NOTIFICATION_SERVICE);
        //创建notification
        nf=new Notification(R.drawable.ic_launcher,"下载",System.currentTimeMillis());
        //将此通知放到通知栏的"Ongoing"即"正在运行"组中
        nf.flags |= Notification.FLAG_ONGOING_EVENT; 

        //定义notification显示
        rv=new RemoteViews(getPackageName(),R.layout.view1);
        rv.setProgressBar(R.id.progressBar1, 100, 0, true);
        rv.setTextViewText(R.id.textView1, appName);
        rv.setTextViewText(R.id.textView3, "0%");
        rv.setTextViewText(R.id.textView2, "0K/0K");
        nf.contentView=rv;
        ni.notify(R.layout.view1, nf);
        
        //开始下载
        new DownLoadThread().start();
        
        return super.onStartCommand(intent, flags, startId);
    }
    
    //定义一个handler，用来刷新界面
    Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            //刷新数据
            if(msg.what==0x01){
                int downloadSzie=msg.getData().getInt("downloadSzie");
                int totalSize=msg.getData().getInt("totalSize");
                //没下载完
                int pos=downloadSzie*100/totalSize;
                rv.setTextViewText(R.id.textView3, pos+"%");
                rv.setTextViewText(R.id.textView2, (downloadSzie/1024)+"K/"+(totalSize/1024)+"K");

                //下载完了
                if(downloadSzie==totalSize){
                    rv.setTextViewText(R.id.textView4,"下载完成，点击安装");
                    Intent in=new Intent(Intent.ACTION_VIEW);
                    
                    String path=updateFile.getPath();
                    Uri uri=Uri.fromFile(updateFile);
                    in.setDataAndType(uri, "application/vnd.android.package-archive");
                    PendingIntent pendingIntent = PendingIntent.getActivity(DownService.this, 0, in, 0); 
                    //修改标题类型，点击一次后关闭
                    nf.flags = Notification.FLAG_AUTO_CANCEL;
                    nf.contentIntent=pendingIntent;
                }
                nf.contentView=rv;
                ni.notify(R.layout.view1, nf);
            }

        }
    };
    
    
    //定义一个下载线程
    class DownLoadThread extends Thread {
        
        private int totalSize=0;
        private int downloadSzie=0;

        @Override
        public void run(){

            try {
                URL url;
                HttpURLConnection http;
                url = new URL(appURL);
                http=(HttpURLConnection)url.openConnection();
                //记录上次百分比，主要是为了减少界面刷新
                int pos=0;

                //timeout 10秒
                http.setConnectTimeout(10*1000);
                http.setReadTimeout(10*1000);
                //获取文件大小
                totalSize=http.getContentLength();
                //成功
                if(http.getResponseCode()==200){
                    InputStream in=http.getInputStream();
                    FileOutputStream out=new FileOutputStream(updateFile,false);
                    
                    byte[] buffer =new byte[1024];
                    int readSize=0;
                    while ((readSize=in.read(buffer))!=-1){
                        //保存到文件
                        out.write(buffer,0,readSize);
                        //总下载数
                        downloadSzie =downloadSzie +readSize;
                        
                        //刷新界面
                        if(pos!=(downloadSzie*100/totalSize)){
                        Message msg=new Message();
                        msg.what=0x01;
                        Bundle b=new Bundle();
                        b.putInt("downloadSzie", downloadSzie);
                        b.putInt("totalSize", totalSize);
                        msg.setData(b);
                        handler.sendMessage(msg);
                        pos=downloadSzie*100/totalSize;
                    }
                    }
                    if(http!=null){
                        http.disconnect();
                    }
                    in.close();
                    out.close();
                }
            } catch (Exception e) {
                // TODO 自动生成的 catch 块
                e.printStackTrace();
            }
        }
    }
    

}